Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nonaqueous electrolyte and lithium ion battery containing same

A non-aqueous electrolyte, high content technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of poor heat resistance, short service life, etc., achieve good overcharge safety performance, inhibit expansion phenomenon, and excellent performance Effect

Active Publication Date: 2012-11-14
NINGDE AMPEREX TECH
View PDF9 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to: aim at the deficiencies in the prior art, and provide a kind of non-aqueous electrolyte that can obviously improve the heat-resistant performance of lithium-ion battery and its service life at higher temperature, to overcome the problems in the prior art The non-aqueous electrolyte has poor heat resistance and short service life at higher temperatures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nonaqueous electrolyte and lithium ion battery containing same
  • Nonaqueous electrolyte and lithium ion battery containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The non-aqueous electrolyte (referred to as E1) provided in this example includes solvents and additives, wherein the solvents include ethylene carbonate (EC), propylene carbonate (PC), ethyl methyl carbonate (EMC), carbonic acid Diethyl ester (DEC) and fluorobenzene (FB), the volume ratio is 2:3:3:2, the additive is vinylene carbonate (VC), based on the total mass of non-aqueous electrolyte, the mass of VC The percentage is 3.0wt%, and the solute is lithium hexafluorophosphate (LiFP 6 ), and the solute concentration is 1mol / L.

[0026] Its preparation method is as follows: take ethylene carbonate (EC), propylene carbonate (PC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC) and fluorobenzene with a volume ratio of 2:3:3:2 in sequence (FB), after mixing these components evenly to obtain a mixed solvent, then add 3.0 wt% VC based on non-aqueous electrolyte to the mixed solvent; then add LiFP 6 , and make LiFP 6 The concentration is 1mol / L, and the no...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of nonaqueous electrolyte batteries and particularly relates to a nonaqueous electrolyte which comprises solvent, solute and additive. The solvent is composed of ethylene carbonate, propylene carbonate, diethyl carbonate, ethyl methyl carbonate and fluorobenzene compounds which are mono-fluorobenzen or di-fluorobenzene, wherein the content of the fluorobenzene compounds is 2%-40% by volume percent on the basis of the solvent. The additive is one of nitriles, vinyl acetate and vinylene carbonate, wherein the chemical formula of the nitriles is NC-R-CN, R refers to alkyl groups and contains 2-6 carbon atoms. Compared with the prior art, the nonaqueous electrolyte has the advantages that the cycle life of batteries can be prolonged, high-temperature storage performance of the batteries can be improved, and expansion of the batteries at high temperature is inhibited while overcharge safety performance of the batteries is well considered. In addition, the invention further discloses a lithium ion battery containing the nonaqueous electrolyte.

Description

technical field [0001] The invention belongs to the technical field of nonaqueous electrolyte batteries, in particular to a nonaqueous electrolyte and a lithium ion battery containing the nonaqueous electrolyte. Background technique [0002] Among various consumer battery products, small rechargeable lithium-ion batteries have been widely used, such as in mobile phones, MP3 / MP4 and GPS navigators. In recent years, the low-carbon economy is in the ascendant, and the rapid development of power vehicles and grid energy storage also puts forward new requirements for rechargeable lithium-ion batteries. [0003] As small as lithium-ion batteries for power tools and notebook computers, as large as lithium-ion batteries for vehicle power supplies, they are usually connected in series and / or in parallel in a relatively closed space in the form of battery packs. The heat produced by the environment and the heat produced by the environment will be difficult to dissipate in time. That...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M10/0567H01M10/0569H01M10/0525
CPCY02E60/122Y02E60/10
Inventor 陈小波袁庆丰杨建东杨先明
Owner NINGDE AMPEREX TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com